body{
margin: 0;
}
#all{
	width: 80%;
	height: 600px;
	/*border: 1px solid black ;*/
	margin: auto;
}
#all #top{
    height: 180px;
    background-image: url(../../img/headphone/topbg.JPG);
}
#nav{
	height: 50px;
	background: deepskyblue;
}
#main{
	height: 400px;
	background-color: aquamarine
}
#main table{
	border: 1px solid black;
    width: 80%;
    border-collapse: collapse;	
}
#main table caption{
	background: beige;
	line-height: 40px;
	font-size: 25px;
	font-family: "微软雅黑";
}
#main table td{
	border:1px solid black;
	line-height: 30px;
	text-align: center;
}
#button{
	text-align:center;
}
#foot{
	height: 50px;
	background: aliceblue;
	font-size: 15px;
	font-family: "微软雅黑";
	line-height: 50px;
	text-align:center;
}



